feat(ask-user): 弹窗新增「不回答」选项

- 弹窗 footer 新增「✕ 不回答」按钮，只跳过当前查看的问题，
  其余问题保持待回答
- 后端 answer() 支持 dismissed 类型答案，跳过非空校验
- 模型侧工具结果返回「用户没有回答或不想回答这个问题，
  请直接输出内容向用户提问」，引导模型改为在对话中提问

modules/user_question_manager.py

@@ -105,10 +105,11 @@ class UserQuestionManager:
         username: str,
         selected_option_id: Optional[str] = None,
         text: Optional[str] = None,
+        dismissed: bool = False,
     ) -> Dict[str, Any]:
         clean_option_id = str(selected_option_id or "").strip()
         clean_text = str(text or "").strip()
-        if not clean_option_id and not clean_text:
+        if not dismissed and not clean_option_id and not clean_text:
             raise ValueError("回答不能为空")
         with self._lock:
             item = self._items.get(question_id)
@@ -119,6 +120,13 @@ class UserQuestionManager:
             if item.get("status") != "pending":
                 return dict(item)
 
+            # 用户主动选择不回答：标记为 dismissed，工具结果会提示模型改为在对话中提问
+            if dismissed:
+                item["status"] = "answered"
+                item["answered_at"] = time.time()
+                item["answer"] = {"type": "dismissed", "text": ""}
+                return dict(item)
+
             selected_option = None
             if clean_option_id:
                 for opt in item.get("options") or []:
@@ -152,6 +160,8 @@ def format_user_question_answer(item: Dict[str, Any]) -> str:
     answer = item.get("answer") if isinstance(item, dict) else None
     if not isinstance(answer, dict):
         return "用户未回答。"
+    if answer.get("type") == "dismissed":
+        return "用户没有回答或不想回答这个问题，请直接输出内容向用户提问"
     lines: List[str] = []
     label = str(answer.get("selected_option_label") or "").strip()
     text = str(answer.get("text") or "").strip()

server/chat/approval.py

@@ -72,6 +72,7 @@ def answer_user_question(terminal: WebTerminal, workspace: UserWorkspace, userna
             username=username,
             selected_option_id=data.get("selected_option_id"),
             text=data.get("text"),
+            dismissed=bool(data.get("dismissed")),
         )
     except ValueError as exc:
         return jsonify({"success": False, "error": str(exc)}), 400

static/src/App.vue

@@ -520,6 +520,7 @@
         @minimize="minimizeUserQuestionDialog"
         @update:active-index="userQuestionActiveIndex = $event"
         @submit="submitUserQuestionAnswers"
+        @dismiss="dismissUserQuestions"
       />
       <transition name="overlay-fade">
         <VersioningDialog

static/src/app/methods/ui/dialog.ts

@@ -144,7 +144,8 @@ export const dialogMethods = {
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({
             selected_option_id: answer?.selected_option_id || undefined,
-            text: answer?.text || ''
+            text: answer?.text || '',
+            dismissed: answer?.dismissed === true
           })
         });
         const payload = await response.json().catch(() => ({}));
@@ -172,6 +173,15 @@ export const dialogMethods = {
       this.answeringUserQuestionIds = [];
     }
   },
+  // 用户点击「不回答」：只将当前查看的这个问题标记为 dismissed，其余问题保持待回答。
+  // 模型侧会收到「用户没有回答或不想回答」的工具结果并改为在对话中直接提问。
+  async dismissUserQuestions(questionId) {
+    const id = String(questionId || '').trim();
+    if (!id) {
+      return;
+    }
+    await this.submitUserQuestionAnswers([{ question_id: id, dismissed: true }]);
+  },
   async answerUserQuestionFromComposer(text) {
     const clean = String(text || '').trim();
     if (!clean || !Array.isArray(this.pendingUserQuestions) || !this.pendingUserQuestions.length) {

static/src/components/overlay/UserQuestionDialog.vue

@@ -57,6 +57,15 @@
         </div>
 
         <footer class="user-question-footer">
+          <button
+            type="button"
+            class="user-question-btn ghost"
+            :disabled="submitting"
+            title="不回答当前这个问题，AI 将改为在对话中直接提问"
+            @click="dismiss"
+          >
+            ✕ 不回答
+          </button>
           <div class="user-question-spacer"></div>
           <div class="user-question-actions">
             <button type="button" class="user-question-btn primary" :disabled="!canSubmit || submitting" @click="submit">
@@ -83,6 +92,7 @@ const emit = defineEmits<{
   (event: 'minimize'): void;
   (event: 'update:active-index', value: number): void;
   (event: 'submit', answers: Array<any>): void;
+  (event: 'dismiss', questionId: string): void;
 }>();
 
 const drafts = reactive<Record<string, { selected_option_id: string; text: string }>>({});
@@ -142,6 +152,14 @@ function submit() {
   });
   emit('submit', answers);
 }
+
+// 只跳过当前查看的问题，其余问题保持待回答
+function dismiss() {
+  if (submitting.value) return;
+  const questionId = String(currentQuestion.value?.question_id || '').trim();
+  if (!questionId) return;
+  emit('dismiss', questionId);
+}
 </script>
 
 <style scoped>